Unable to load DLL 'freetype6' or one of its dependencies #32
Comments
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Thank you for this bug report.
I noted in the stack trace that the exception message appears to be in
French. Can you confirm which language settings are installed on your
machine and dotnet runtime. I suspect that either sharpfont or I have an
internationalization bug that is looking in the wrong place for the
FreeType binary. I would love to work on this with you.
Sorry but I am a monolingual American. (I did take 3 years of French in
high school, but that was 30 years ago.) I suspect this may not be the
only internationalization bug that you shake loose. (My font mapping for
European languages should be pretty secure. I am almost sure that I have
large feature holes in right-to-left and vertical asian languages, but I am
waiting until I get real files with problems before I implement them.
Let me know what your configuration is and I will see if I can duplicate
your bug locally.
JDM
…On Tue, Jan 3, 2023 at 9:19 AM Mathieu Jolivet ***@***.***> wrote:
Hello,
I tried to use Melville.Pdf on a .NET7 project (on a windows machine), and
when testing the code in the readme, I had the following error :
System.TypeInitializationException: The type initializer for 'Melville.Pdf.Model.Renderers.FontRenderings.FreeType.GlobalFreeTypeResources' threw an exception.
---> System.DllNotFoundException: Unable to load DLL 'freetype6' or one of its dependencies: Le module spécifié est introuvable. (0x8007007E)
at SharpFont.FT.FT_Init_FreeType(IntPtr& alibrary)
at SharpFont.Library..ctor()
at Melville.Pdf.Model.Renderers.FontRenderings.FreeType.GlobalFreeTypeResources.LoadFontLibrary()
at Melville.Pdf.Model.Renderers.FontRenderings.FreeType.GlobalFreeTypeResources..cctor()
--- End of inner exception stack trace ---
at Melville.Pdf.Model.Renderers.FontRenderings.FreeType.FreeTypeFontFactory.FromCSharpStream(Stream source, Int32 index)
at Melville.Pdf.Model.Renderers.FontRenderings.FreeType.FreeTypeFontFactory.FromStream(PdfStream pdfStream)
at Melville.Pdf.Model.Renderers.FontRenderings.FreeType.FreeTypeFontFactory.FromStream(PdfStream pdfStream)
at Melville.Pdf.Model.Renderers.FontRenderings.FontReader.CreateRealizedFont(PdfFont fontStreamSource, FreeTypeFontFactory factory)
at Melville.Pdf.Model.Renderers.DocumentPartCaches.DocumentPartCache.FindAndStoreValue[T,TSource](TSource source, Func`2 creator)
at Melville.Pdf.Model.Renderers.DocumentPartCaches.DocumentPartCache.Get[TSource,T](TSource source, Func`2 creator)
at Melville.Pdf.Model.Renderers.RenderEngine.FontFromDictionary(PdfDictionary fontDic)
at Melville.Pdf.Model.Renderers.RenderEngine.SetFont(PdfName font, Double size)
at Melville.Pdf.LowLevel.Parsing.ContentStreams.ContentStreamContext.HandleOpCode(ContentStreamOperatorValue opCode)
at Melville.Pdf.LowLevel.Parsing.ContentStreams.ContentStreamParser.RunOpcode(UInt32 opCode)
at Melville.Pdf.LowLevel.Parsing.ContentStreams.ContentStreamParser.ParseReadResult(BufferFromPipe bfp)
at Melville.Pdf.LowLevel.Parsing.ContentStreams.ContentStreamParser.Parse(PipeReader source)
at Melville.Pdf.Model.Renderers.RenderEngine.RunContentStream()
at Melville.Pdf.Model.Renderers.DocumentRenderers.DocumentRenderer.RenderPageTo(Int32 oneBasedPageNumber, Func`3 target)
at Melville.Pdf.SkiaSharp.RenderWithSkia.ToSurfaceAsync(DocumentRenderer doc, Int32 oneBasedPageNumber, Int32 width, Int32 height)
at Melville.Pdf.SkiaSharp.RenderWithSkia.ToPngStreamAsync(DocumentRenderer doc, Int32 oneBasedPageNumber, Stream target, Int32 width, Int32 height)
I use Melville.Pdf.SkiaSharp 0.2.0. It implicitely referenced
SharpFont.NetStandard 1.0.5. I tried to also install SharpFont 4.0.1 but
nothing changed.
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You are right, I am french, and I only have French language installed on my computer. Same for everything regarding format. |
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I just installed a French version of windows 10 on a virtual machine. I can repro the bug exactly as you indicated above. Let me setup a remote debugger and see if I can figure out what is going on. |
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I now know what is going on. Freetype6 (as distributed by SharpFont) depends on MSVCRT120.dll. (A version of the microsoft visual C runtime.) I happened to have MSVCRT120.dll in my windows folder, and I will attach it to this comment. The file is not present on the plain-vanilla/french image I have in the virtual machine. (I now suspect that the bug has nothing to do with language, and everything to do with being a plain-vanilla windows install.) If I copy MSVCRT120.dlll to the [App]\bin\debug\net7.0-windows\lib\x64 (which puts it right next to freetype6.dll) then everything works. I can break and fix the problem by adding or deleting that single file. I would really appreciate it if you could confirm that this hack makes it work on your machine as well. This bug was reported to sharpfont 4 years ago (Robmaister/SharpFont#119) and has not been fixed so it is probably time to fork the repo and link a version of freetype without external dependencies. This will take me a little bit of time. If I am going to fork the repository, I an going to fix some other problems that I do not like as well. See also: |
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So I think I got this fixed -- with a hack. I created a new Nuget package, Melville.Sharpfont that packages msvcr120.dll into the nuget package. I believe that fixes this issue for windows 32 and windows 64. I had a little problem that I am in the middle of an effort to make a bunch of work to make most of the library's members internal. I am halfway done with that. In order to make this available without breaking the version, I released a prerelease version 0.3.0-preview1 that incorporates the DLLs needed to fix this problem, but the internal/public status is an odd state. When I finish locking down and documenting the interface, I would like to release a 0.3 version with a lot of the public surface area removed, This is a big blocker to going to version 1.0. |
Hello,
I tried to use Melville.Pdf on a .NET7 project (on a windows machine), and when testing the code in the readme, I had the following error :
I use Melville.Pdf.SkiaSharp 0.2.0. It implicitely referenced SharpFont.NetStandard 1.0.5. I tried to also install SharpFont 4.0.1 but nothing changed.
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